Andre mositcker



E. SCHNEIDER.

PISTN FOR HEAT ENGINES. APPLICATION FILED IEB. I4. IQIII.

iatented June 17', 1919.

maintain EUGENE SCHNEIDER, on teams, nennen, sesiones To Schamanen .a om, FRANCE, A LIMITED Jemms'reeii confinanti efe manon Ps'ronnoie amine-Encinas gramm f .i

Specicaton of Letters atent.

imaftenter: June -To all whom t may concern:

Be it known that I, EUGNE Soienninnn, a citizen of the French Republic, and a nest dent 01542 Rue dAnjou, Paris, France, have linvented new and useful mproven'lents in Pistons tor Heatingines, which invention is fully set forth in the foiiovving speciiication.'

This invention has for its object to 'povide an improved piston for heat engines and other apparatus, Whichis divided transversely in a known manner into two cie* ments assembled by means et hoits, which construction faciiitates as is Weii irnowin the manufacture of the piston, am obviates having to replace it entieijy in case of Wear or damage of its parte that come in contact with hot gases in Working.

This invention consists in improvements in pistons of this type. These improvements While assuring a perfect assembiag'e between the two elements of the piston, and a suitabie rigidity of the assembled piston, are designed on the one hand to facilitate the ere pension, and` it may be, aiso the de'oimation of the element that is exposed directif? to the action of the hot gases, and on the other hand the admission and ciiicuiation of a cooling medium. i

An embodiment of this invention is iii-ustrated in the accompanying drawings in which:

Figure 1 is a central iong'itndinai section of the improved piston, and

Fig. 2 is a cross section on the iine "iii-iii: of Fig. 1.

- AS shown, the improved piston is divided transversely in a known manner into two elements A and B assembied by means ot bolts C.

According to the present improvements the outer or iovver as the case may be) eie ment B of the piston, hereinaiter termed the piston body, is formed at its fovvva'rd end With an extension D projeetingfrom the center of an internal rib oi* diaphiagrn i). This extension is adapted to engage in the cavity of the inner or upper {as 'the ease may be) element A of the piston. rifhe top or outer end et the extension comes aisne hoiiovv piston hea-d removahi'y .head and te project into support io eiement having a @entrai extension.

in Contact with the end a of the element L for instance through the intermedi ,7 `ci ribs o?. Fjihe support of the end .5 of ti, ton upon the piston body i3 is thereby af sured, While aiioiving to the greatest 'pos-si bie extent the expansion or deformation of the saidy end under the action of the het gases with which it comes into contact,

@n the other hand, the Shanks of the assemio]ing Y boits C are tnbuiar and are tous adapted to seive as ducts for the admission and circulation of a iinid for cooiing; the end a and adjacent parts. c1 are Beii Washers which mayv he iocated betivee boit nuts o and ted on the pist for the purpose of compensati pansion oi' the tabular bolts C.

. A.. piston compr sing a piston body, fl@

thereto., bodyhavihr3n an end @Mansion adapted to iorm an outer ciosure ii with the Working end theieeoi3 Wheiehy "f piston head is free to expand iongiti 2. In a transversely divided pistol` i heat engine eyiinders, the combination. ci' a hoiiow inner piston element open at its outer end, an outer piston element, and means for assembiing said innen piston element im said outer piston element, said outer piston :fcm said outer piston eieinent i hoi .ovv of said inner piston i i med at its end with 'ries 3i 'the inside end sui .in piston eiement in the asseinbieu ten, whereby said inner aisten eieinenv imiy iied to said ou'tei'A piston eieinent i cornpiete 'veedom of iongitudinai 'in a transversely divided joie heat engine cyiinders9 coinhinao ci.. ei, hoiiovv innen piston eiement open at its o .i endj an euteiJ piston eiernent, and. tuhuiai bolts serving as ducts for the iniiovv and ont iiovv of coeiing Huid into and from said hoi iow innen pieton eiernent., for aseemhiileg said innei1 piston eiement said mite4J ton eien'ient, s 'sten eiement i i# L im) `out/ar piston element into the hollow of Said 'inner pstqn. elementand adapt/ed to bear j 'against the iisi'de end surfac of said inner .plston 'elen'int in `'the afsembled piston, .5' whrebyfsaid' inner piston element is rmly f. fixedwsa-idy outer-*plston 'element with com- In tstimony `whereof I have signed this 'speciatioxp l Witness'sl ANDRMOSTICKER, f' Omg. P. Pmzssnr.

EUGENE SCHNEIDER. 'j 

